Built-in to 1Password

An entire suite of security tools

Not only does Watchtower alert you of compromised websites, it also checks for weak or duplicate passwords, and sites missing Two-Factor Authentication or using unsecure HTTP. Plus integration with HaveIBeenPwned.com for check against known data breaches.

Protect yourself with a unique password for every service

The best way to keep yourself protected online is to use strong, unique passwords for every account. That way, even if your data for one site is compromised, the others stay secure.